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Goodwill and Other Intangible Assets | 12 Months Ended
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Dec. 31, 2024
Goodwill and Other Intangible Assets |
Goodwill and Other Intangible Assets | 2. Goodwill and Other Intangible Assets Goodwill The changes in the carrying amount of goodwill reported in our segments were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​ | ​
​ |  | Retirement |  | Principal |  | ​ | ​ |  | ​ |  | ​ | ​
​ | ​ | and Income | ​ | Asset | ​ | Benefits and | ​ | ​ | ​ | ​ | ​
​ | ​ | Solutions | ​ | Management | ​ | Protection | ​ | Corporate | ​ | Consolidated
​ | ​ | (in millions)
Balance as of January 1, 2023 | ​ | $ | 675.9 | ​ | $ | 892.8 | ​ | $ | 29.5 | ​ | $ | — | ​ | $ | 1,598.2
Foreign currency | ​ | ​ | — | ​ | ​ | 10.3 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 10.3
Balance as of December 31, 2023 | ​ | ​ | 675.9 | ​ | ​ | 903.1 | ​ | ​ | 29.5 | ​ | ​ | — | ​ | ​ | 1,608.5
Goodwill from acquisitions (1) | ​ | ​ | 11.3 | ​ | ​ | — | ​ | ​ | — | ​ | ​ | — | ​ | ​ | 11.3
Foreign currency | ​ | ​ | — | ​ | ​ | (70.1) | ​ | ​ | — | ​ | ​ | — | ​ | ​ | (70.1)
Balance as of December 31, 2024 | ​ | $ | 687.2 | ​ | $ | 833.0 | ​ | $ | 29.5 | ​ | $ | — | ​ | $ | 1,549.7
(1) | Relates to the acquisition of employee stock ownership plan business from Ascensus within our Retirement and Income Solutions segment.
Finite Lived Intangible Assets Amortized intangible assets primarily relate to customer relationship intangibles associated with our acquisition of the Institutional Retirement & Trust business of Wells Fargo Bank, N.A. and previous acquisitions in Chile, Mexico and Hong Kong. The finite lived intangible assets that continue to be subject to amortization over a weighted average remaining expected life of 15 years were as follows: ​
​ | ​ | ​ | ​ | ​ | ​ | ​
​ | ​ | December 31,
​ |  | 2024 |  | 2023
​ | ​ | (in millions)
Gross carrying value | ​ | $ | 1,157.9 | ​ | $ | 1,215.1
Accumulated amortization | ​ |  | 523.1 | ​ | ​ | 512.7
Net carrying value | ​ | $ | 634.8 | ​ | $ | 702.4
​ During 2024 and 2023, we fully amortized other finite lived intangible assets of $18.4 million and $31.2 million, respectively. The amortization expense for intangible assets with finite useful lives was $66.1 million, $68.6 million and $70.7 million for 2024, 2023 and 2022, respectively. As of December 31, 2024, the estimated amortization expense for the next five years is as follows (in millions): ​
​ | ​ | ​ | ​
Year ending December 31: |  | ​ | ​
2025 | ​ | $ | 60.1
2026 | ​ | ​ | 56.1
2027 | ​ | ​ | 55.9
2028 | ​ | ​ | 40.9
2029 | ​ | ​ | 39.6
​ Indefinite Lived Intangible Assets The net carrying amount of unamortized indefinite lived intangible assets was $755.1 million and $767.4 million as of December 31, 2024 and 2023, respectively. As of both December 31, 2024 and 2023, $608.0 million relates to investment management contracts associated with our acquisition of WM Advisors, Inc. in 2006. The remaining balance primarily relates to the trade name intangible associated with our acquisition of Administradora de Fondos de Pensiones Cuprum S.A. (“Cuprum”) in 2013.

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- Definition The entire disclosure for goodwill and intangible assets. + References Reference 1: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 30 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-30/tableOfContent Reference 2: http://www.xbrl.org/2009/role/commonPracticeRef -Topic 350 -SubTopic 20 -Name Accounting Standards Codification -Publisher FASB -URI https://asc.fasb.org/350-20/tableOfContent + Details
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